Automatic pattern stab



June 18,- 1929. E. E. BRINSER 1,717.352

AUTOMATIC PATTERN STAB Filed March 31, 1928 Patented June 18, 1929.

UNITED STATES,

ELIZABETH E. BRINSEB, OF ELIZABETHTOWN, PENNSYLVANIA.

AUTOMATIC PATTERN STAB;

Application filed March 31, .1928. Serial No. 266,369.

In my Patent, No. 1,646,744, granted October 25, 1927, for automaticpattern stabs,,I have shown several forms of devices for securing thestabs to a pattern. Thepresent invention is in the nature of animprovement on the element for securing the device to a pattern. d

The invention consists of. a stab having both ends blunt pointed, oneend having at its base a laterally extended and preferably circularflange made integral therewith, and the other end having at its base agroove in which is upset and clinched a securing element, alsopreferably circular, and having a down-turned rim and a countersunkperforated crown, the securing element being slipped over the groovedend and its rim sunk in the pattern and its countersunk crown flattenedout upon the surface of the pattern and the rim or edge of the hole inthe countersunk portion engaging the groove in the end, as I willproceed now to explain more fully and finally claim.

In the accompanying drawings illustrating the invention, in the severalfigures of which like parts are similarly designated, Figure 1 is a topplan view of a pattern for a shoe upper part, with three of my stabs inposition. Fig. 2 is an enlarged cross section on line 22 of Fig. 1, ofthe set stab and a portion of the pattern. Fig. 3 is an elevation, andFig. 4t is a plan view of parts of the stab, on the same scale as Fig.2. Fig. 5 is a top plan view and Fig. 6 is a cross section of thesecuring element, also on the scale shown in Fig. 2.

The pattern 1 may be for any of the parts of a shoe, but is here shownas for the vamp, and as usual has the metalbinding 2. At any desiredpositions are placed the stabs 3.

As shown, the stab may have a body portion 1 of cylindrical form, havingboth of its ends 5 and G blunt-pointed so as not to mar or deface theleather to be cut as the pattern is moved into position on the materialto be marked and out and yet leave a mark thereon to guide the stitcherin properly uniting the parts of a shoe or other article. At the base ofone of the blunt points is a laterally eX- tended flange 7, preferablycircular and made integral with the body, although it may be attachedthereto. At the base of the other blunt-pointed end ofthe body is acircumferential groove 8 adapted to receive and fixedly engage thesecuring element 9.

The securing element 9 is, made with a crown 10 having a down-turned rimflange sink 152 with a hole 13 in it. j v

The pattern is perforatedfor thereception of the body of the stab, withthe grooved end of the body projecting beyond the surface ofthepat-tern, and then the securing element is applied to this groovedend by forcing its perforated countersink over the blunt end and its rimsunk in the pattern until the countersunk crown is flattened out and therim of the hole therein is forced into engagement with the groove 8, asshown in Fig. 2.

By the means described the securing ele ment takes fast hold not only onthe body of the stab but also in the material ofthe pat tern, and theunion of stab and pattern is thereby firmly and smoothly effected,without any edges projecting'from the securing element. 1

The stab body has both ends alike, and these ends project from oppositesides of the pattern, so that the pattern equipped with my stabs may beused reversely for stabbing purposes in cutting and marking both rightand left shoe portions.

The invention is not limited to use on leather nor on shoe partsregardless of their material, and is applicable, also, in themanufacture of purses, pocket-books, bags and other containers made upof parts which are to be stitched together.

By means of a stab constructed as described, the correct marking ofa'pat tern is absolutely ensured, because the stabs are fix- -11, thecrown 10 having a central counter- 7 edly applied to the pattern andextend in the same plane from both sides. When the pat tern is placed onthe material the operator simply presses it sufiiciently to make thecorrect impression. Obviously the operator must apply sufficientpressure to the pattern when cutting to prevent it from slipping, andwith slightly additional pressure, he can make the impression on thematerial. Because of this mode of operation, I have designated my deviceas an automatic pattern stab.

The securing element 9 may be varied in detail within the principle ofmy invention and the scope of the claims following.

What I claim is 1. A pattern stab, having a body provided with acircumferentially grooved blunt end andadapted to be applied to apattern with the end projecting from one of the sides of the pattern,and a securing element having a crown provided with a countersunk andperforated portion to engage the groove in said blunt end and clinchedtherein by flattening the countersunk crown on the pattern.

2. A pattern stab, having it body provided with blunt ends, one of saidends having a circumferential groove and the other end having aretainingflange, and a securlng element composed of acrown having a central per-IHEIltCQIIlPOSBd of a crown having a central perforated countersink anda down-turned rim, combined with a pattern in which the body is placedwith its blunt ends projecting from oppositesides, the securing elementbeing applied. to the grooved endby its countersink and its rim sunk inthe pattern by flattening the crown about the grooved end and intoengagementtherewith and the pattern. In testimony hereof I have hereuntoset my hand this 30th day of March A. D. 1928.

ELIZABETH E. BRINSER.

